Deicing throttle



NOV. 3, 1936. R, F. GAGG 2,059,687

DEICING THROTTLE" Filed Jan. 29, 1935 INVENTOR.

' I/ozfff F6466' Patented Nov. 3, 1936 PATENT OFFICE DEICING THROTTLE Rudolph F. Gags,

Fairlawn, N. J., assignor to Wright Aeronautical Corporation, a corporation of New York Application January 29, 1935, Serial No. 3,992

4 Claims.

This invention relates to throttles for internal combustion engines and comprises a new and useful means having for an object the removal of ice which is apt to collect on certain parts by freezing of atmospheric moisture under low temperatures. The invention is adapted for use in carburetor throttles, or in air throttles of any type, such, for instance, as those used in conjunction with a fuel injection system.

In the drawing, Fig. l is a fragmentary perspective View illustrating the throttle of this invention; and

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

Referring first to Fig. 2, it will be seen that the throttle comprises a thin and flexible plate Ill, preferably of metallic material, which is covered by a flexible covering I2, preferably of rubber vulcanized in position. Secured at either end of the throttle plate III (as by welding before vulcanizing) are aligned stub shafts I4 and I6, each of these passing through the usual bearings in the throttle barrel of the carburetor (not shown).

To the left-hand stub I6 there is secured a throttle lever I8, and a double-armed lever 20 engageable with a stop 22 carried on the body Within which the throttle is mounted. To the right-hand stub shaft I4 is secured a similar double-armed lever 2d engageable with a xed stop 26 on the body. The stop levers are so arranged that the right-hand lever ZII engages its stop 26 before the left-hand lever 20 engages its stop 22. This permits slight over-travel of the lever I8 whereby the operator may twist or distort the throttle at the end of its travel, thereby cracking oii any ice incrustation. The rigidity of the throttle plate I0 is such that substantially no deformation takes place in normal operation between slightly open and full open positions. Only when the throttle is fully closed and jammed to cause engagement of both arms 2t and 2t with their respective stops 22 and 26, will the throttle plate Il! be warped. If desired, the full throttle stop arms 28 and 3|! may be differentially adjusted, so that, when the engine is running with wide open throttle, the lever I8 may be moved to Warp the throttle plate I0 to crack off any ice incrustation.

The use of the rubber I2 encasing the throttle plate Il! is advantageous, due to the lower degree of adhesion of ice thereto than if metal were used. The rubber is preferably of a size and shape similar to that of the ordinary al1-metal throttle valve.

While I have described my invention in detail in its present preferred embodiment, it will be obvious to those skilled in the art, after understanding my invention, that various changes and modifications may be made therein without departing from the spirit or scope thereof. I aim in the appended claims to cover all such modications and changes.

What is claimed is:

l. A throttle comprising a torsionally exible plate, stub shafts extending from opposite sides of said plate, a control lever secured to one of said stubs, a stop means secured to the other stub, the whole adapted for twisting distortion of the throttle plate by over-travel of the control lever beyond the position at which said stop means becomes active.

2. In an engine, a flexible throttle valve having pivot studs at each end thereof engaging the barrel within which the throttle is contained, stop means on each side of said barrel, and a stop engaging means mounted on each said pivot stud for engagement with the stop on the corresponding barrel side, one said stop engaging means being organized to engage its stop prior to engagement of the other said means with its stop, said other means being engageable with its stop upon ilexure of said throttle valve.

3. A flexible throttle valve comprising a thin distortable disk having stud shafts at each end thereof pivotally engaging the barrel Within which the throttle valve is contained, stop means on one side of said barrel, stop-engaging means on the corresponding stud for engagement with said stop means, and a valve control lever mounted on the other said valve stud, so organized that over-control of said lever after engagement of said stop and stop-engaging means effects distortion of said distortable valve disk.

4. A flexible throttle valve comprising a thin distortable disk having stud shafts at each end thereof pivotally engaging the barrel within which the valve is contained, stop means on the sides of the barrel, stop-engaging means on said stud shafts each for engagement with one said stop means, the respective stopmeans being so organized as to not engage both respective stopengaging means, except when said valve disk is distorted, and means for moving said valve through normal valve opening and closing, and through the range of disk distortion to effect engagement of both stop means with their respective engaging means.

RUDOLPH F. GAGG. 

